21188580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7207}}^1$

素因数の和:7233

約数の個数: 72

約数和(自身を含む): 69023808

約数和(自身を除く): 47835228

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7207, 14414, 21621, 28828, 36035, 43242, 50449, 72070, 86484, 100898, 108105, 144140, 151347, 201796, 216210, 252245, 302694, 353143, 432420, 504490, 605388, 706286, 756735, 1008980, 1059429, 1412572, 1513470, 1765715, 2118858, 3026940, 3531430, 4237716, 5297145, 7062860, 10594290, 21188580]

約数ペア:

[(1, 21188580), (2, 10594290), (3, 7062860), (4, 5297145), (5, 4237716), (6, 3531430), (7, 3026940), (10, 2118858), (12, 1765715), (14, 1513470), (15, 1412572), (20, 1059429), (21, 1008980), (28, 756735), (30, 706286), (35, 605388), (42, 504490), (49, 432420), (60, 353143), (70, 302694), (84, 252245), (98, 216210), (105, 201796), (140, 151347), (147, 144140), (196, 108105), (210, 100898), (245, 86484), (294, 72070), (420, 50449), (490, 43242), (588, 36035), (735, 28828), (980, 21621), (1470, 14414), (2940, 7207)]